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From: Marek Vasut <marek.vasut@gmail.com>
To: masonccyang@mxic.com.tw, Lee Jones <lee.jones@linaro.org>
Cc: bbrezillon@kernel.org, broonie@kernel.org,
	devicetree@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Simon Horman <horms@verge.net.au>,
	juliensu@mxic.com.tw, linux-kernel@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org, linux-spi@vger.kernel.org,
	mark.rutland@arm.com, miquel.raynal@bootlin.com,
	robh+dt@kernel.org,
	Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Subject: Re: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings
Date: Tue, 18 Jun 2019 14:01:40 +0200	[thread overview]
Message-ID: <2671d488-82a1-8720-d9a1-03554d955a38@gmail.com> (raw)
In-Reply-To: <OFDA7648A0.F1733EA5-ON48258411.002946DF-48258411.002A2F0D@mxic.com.tw>

On 6/6/19 9:40 AM, masonccyang@mxic.com.tw wrote:
[...]

> RPC-IF works either in SPI or HyperFlash is decided by external hardware 
> pins 
> configuration and it can NOT switch it's operation mode in the run time. 
> This is not like my understanding of MFD.

Which external hardware pins decide the RPC configuration ?

It seems to me like PHYCNT register, PHYMEM bitfield, selects what
device is connected, and then a couple of other bits control the
communication, but I see nothing which would be tied to any external
configuration pins.

[...]

-- 
Best regards,
Marek Vasut

  reply	other threads:[~2019-06-18 12:01 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-21  7:19 [PATCH v13 0/3] mfd: Add Renesas R-Car Gen3 RPC-IF MFD & SPI driver Mason Yang
2019-05-21  7:19 ` [PATCH v13 1/3] mfd: Add Renesas R-Car Gen3 RPC-IF MFD driver Mason Yang
2019-06-03 13:02   ` Lee Jones
2019-06-04  0:52     ` masonccyang
2019-05-21  7:19 ` [PATCH v13 2/3] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver Mason Yang
2019-05-21  7:19 ` [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings Mason Yang
2019-05-22 16:50   ` Sergei Shtylyov
2019-05-23  9:16     ` masonccyang
2019-06-03 13:04     ` Lee Jones
2019-06-03 14:55       ` Sergei Shtylyov
2019-06-06  7:40         ` masonccyang
2019-06-18 12:01           ` Marek Vasut [this message]
2019-06-19  7:36             ` masonccyang

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